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From: Tom Lane <tgl@sss.pgh.pa.us>
To: Etsuro Fujita <etsuro.fujita@gmail.com>
Cc: eric.cyr@gmail.com
Cc: pgsql-bugs@lists.postgresql.org
Subject: Re: BUG #17889: Invalid cursor direction for a foreign scan that reached the fetch_size (MOVE BACKWARD ALL IN cX)
Date: Mon, 15 Jul 2024 09:55:28 -0400
Message-ID: <3147482.1721051728@sss.pgh.pa.us> (raw)
In-Reply-To: <CAPmGK17-1hPixcv0=t6UYjb5=p9qryr-O0BGoNvcUuGw_pRWtA@mail.gmail.com>
References: <17889-e8c39a251d258dda@postgresql.org>
	<CAPmGK17vjjy0Yb=jyK_iCL5rpGW7w1imv=kQB7rkk9xMO4cEjA@mail.gmail.com>
	<CAPmGK16DNvnReiNyKprn4O-j5S2uGzUrcDANaF49md1-ejjjQw@mail.gmail.com>
	<CAPmGK14u-jGV-4B2_T90Lf5U5Az2d5wH0hV3vfUbWkw2d4UjBA@mail.gmail.com>
	<1852635.1682808624@sss.pgh.pa.us>
	<CAPmGK149UubRQGLH6QaBkhJvas+Gz+T6tx2MBX9MTJpxDRKPBA@mail.gmail.com>
	<CAPmGK17-1hPixcv0=t6UYjb5=p9qryr-O0BGoNvcUuGw_pRWtA@mail.gmail.com>

Etsuro Fujita <etsuro.fujita@gmail.com> writes:
> On Fri, Jul 5, 2024 at 9:49 PM Etsuro Fujita <etsuro.fujita@gmail.com> wrote:
>> To fix, how about instead modifying postgres_fdw so that if the remote
>> server is v15 or later, it just recreates a cursor when rewinding it
>> is needed, like the attached?

Uh ... does this ensure that the data hasn't changed?

			regards, tom lane





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  Subject: Re: BUG #17889: Invalid cursor direction for a foreign scan that reached the fetch_size (MOVE BACKWARD ALL IN cX)
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